This is a cost-effective 4G gateway product specifically developed for applications like automation, IT systems, and the Internet of Things. 

The 4G gateway features serial-to-4G transparent transmission, edge data collection, scheduled data reporting, change-based reporting, and remote control functions.

On the module side, it supports Modbus_RTU/ASCII, DLT645-97/07, S7-200 PPI (S7-Smart 485 interface) PLC, FX2N, FX3U, and other serial fieldbus communication protocols. With a small-size design and TTL (or RS485) communication interfaces, it’s easy to embed into user instruments, controllers, and other PCBs.

The module also supports TCP, HTTP, MQTT, and other communication protocols for upstream data, with data reporting in JSON format. It supports private clouds, Alibaba Cloud, Huawei Cloud, Baidu Cloud, ThingsBoard, Airiot, EMQX, Mosquito, RabbitMQ, and other cloud platforms and MQTT brokers, helping software developers quickly build IoT data acquisition systems and IT platforms.

Additionally, the module has remote management functions, allowing users to configure and upgrade the module remotely, which reduces maintenance costs and enhances the user experience.